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1. 发明授权

US06483807B1 Distributed control of service category request mapping 失效
标题翻译：分布式控制服务类别请求映射
公开(公告)号：US06483807B1
公开(公告)日：2002-11-19
申请号：US09270580
申请日：1999-03-16
申请人： Thomas A. Manning , David N. Peck , Robert Constantin , David E. Hammond , Andrew Michal , Stephen R. Veit
发明人： Thomas A. Manning , David N. Peck , Robert Constantin , David E. Hammond , Andrew Michal , Stephen R. Veit
IPC分类号： G01R3108
CPC分类号： H04L12/5602 , H04L12/5601 , H04L49/205 , H04L2012/5634 , H04L2012/5635 , H04L2012/5636 , H04Q11/0478
摘要： Each switch along a call setup path in a network decides whether the call request should be upgraded from a non-flow-controlled service type to a flow-controlled service type. Each switch bases the decision on whether a boolean variable for the calling subscriber that appears in a management information base (MIB) is set to a value indicating that the subscriber is entitled to the upgrade. In addition, the upgrade is performed only if an interface on the route to the called party on which the call setup request is to be forwarded supports flow-controlled connections. When the call is to be upgraded, the switch replaces the service type indicator in the setup message with a value indicating a flow-controlled service type, and forwards the setup message toward the called subscriber. If the MIB variable is set to a value indicating that the upgrade is not to be performed, it is still possible for a subscriber to request flow-controlled service directly, by indicating this service type in the original call setup message. Each switch also makes a call downgrade decision. When a call setup message is received requesting flow-controlled service but destined for an interface that does not support flow-controlled operation, the switch replaces the service type indicator in the outgoing setup message with a value indicating a non-flow-controlled service type.
摘要翻译：沿着网络中的呼叫建立路径的每个交换机决定呼叫请求是否应该从非流控制的服务类型升级到流控服务类型。每个交换机基于出现在管理信息库（MIB）中的主叫用户的布尔变量是否被设置为指示用户有权升级的值的决定。另外，只有当呼叫建立请求被转发到被叫方的路由上的接口支持流量控制连接时才执行升级。当呼叫要升级时，交换机将使用指示流控服务类型的值替换设置消息中的业务类型指示符，并将该建立消息转发给被叫用户。如果MIB变量被设置为指示不执行升级的值，则用户可以通过在原始呼叫建立消息中指示该服务类型来直接请求流控服务。每个开关也会调用降级决定。当接收到呼叫建立消息请求流控制服务但发往不支持流控制操作的接口时，交换机用输出建立消息中的服务类型指示符替换指示非流控服务类型的值。

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